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API Management
Free

Top Rated API Management Software with Free - Page 3

Last updated: November 2026

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Vertesia

(0)

AI-native ECM and agent platform for enterprises

Cloud, on-premises, or hybrid AI-native content and agent platform for enterprises managing large-scale document repositories.

Read more about Vertesia

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pdfRest API Toolkit

(0)

PDF processing API built on the Adobe PDF Library

Developer-first PDF API for conversion, generation, extraction, security, forms, prepress, and AI-ready output. Cloud (US and EU) or self-hosted on your infrastructure.

Read more about pdfRest API Toolkit

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Specmatic

(0)

AI-powered API development and governance tool

Specmatic transforms API specifications into executable contracts, enabling teams to design, build, and govern high-quality APIs without coding. Specmatic supports multiple specification standards and protocols, providing intelligent service virtualization and backward compatibility testing.

Read more about Specmatic

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Meshes

(0)

Event routing for SaaS integrations

Meshes is an API-first event routing platform for SaaS apps. Emit product events through our REST API or SDKs, and Meshes handles fan-out, retries, HMAC-signed webhooks, and idempotent delivery to downstream tools — with a developer portal, API docs, and an MCP server for AI assistants.

Read more about Meshes

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Bump

(0)

The single source of truth for your API ecosystem.

Bump.sh enables developers to collaborate efficiently in increasingly complex API ecosystems. Bump.sh provides a single source of truth, documentation hub, and changes detection for all your APIs.

Bump.sh supports OpenAPI, AsyncAPI, and soon more.

Read more about Bump

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FlashAlpha

(0)

Options analytics API for traders and developers

FlashAlpha provides real-time options analytics via a REST API delivering gamma, delta, vanna, and charm exposure data for over 6,000 US equities and ETFs. It offers Black-Scholes-Merton Greeks, SVI volatility surfaces, max pain analysis, and dealer positioning metrics through live and historical endpoints. Users can integrate via SDKs in Python, JavaScript, C#, Go, and Java or connect to AI assistants via an MCP server for automated analytics queries.

Read more about FlashAlpha

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Zuplo

(0)

Cloud-based API management solution

Zuplo is a fully-managed API management platform designed for developers to build, deploy, and scale APIs. The platform offers programmable API gateway functionality with extensibility, allowing developers to implement custom solutions without restrictive workflow languages. Zuplo includes features such as rate limiting, authentication, OpenAPI integration, and a developer portal that enables API monetization through Stripe integration.

Read more about Zuplo

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ApyGuard

(0)

See and secure every API in your code — before it ships

Code-first API security testing: endpoint discovery from source, OpenAPI generation, and OWASP API Top 10 testing with CI/CD gates.

Read more about ApyGuard

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PactFlow

(0)

API management and contract testing solution

As the leading API contract-testing platform, Pactflow completes your testing needs by confirming API integrations in complex microservices environments, such as enterprises. Teams worldwide chose Pactflow to improve collaboration and reduce their reliance on costly end-to-end testing.

Read more about PactFlow

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GSTIN API

(0)

Real-time GST verification API for India

GSTIN API provides real-time verification of GST numbers in India through a REST endpoint that delivers taxpayer details, filing history, and e-invoicing status. The platform verifies GSTINs against live government records and returns data including legal names, addresses, registration dates, and return-filing information in JSON format.

Read more about GSTIN API

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IPWho an IP Geolocation API

(0)

IP geolocation API without the cloud tax

IPWho is a developer-focused IP geolocation and network intelligence API providing IPv4/IPv6 location, ISP, ASN, timezone, currency, VPN, Tor and threat-related information through a REST API.

Read more about IPWho an IP Geolocation API

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G8

(0)

Self-hosted API gateway and AI gateway

G8 runs in your own infrastructure and handles calls to your APIs, requests to LLM providers and calls from AI agents over MCP.

Read more about G8

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Gravitee.io API Management

(0)

Effortlessly tame API complexity

Gravitee.io API Management offers API design management, access management, monitoring, security, & productization solutions. Gravitee also supports traditional and modern protocols and querying technologies. That way, businesses have a solution that adapts to existing API strategies, instead of the other way around.

Read more about Gravitee.io API Management

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Akto

(0)

API Security Platform for Modern Appsec teams

Akto is an industry-leading solution for API discovery, API security posture management, sensitive data exposure, API security testing.

Read more about Akto

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Beeceptor

(0)

No-code tool for mocking and testing APIs

Beeceptor is a powerful, no-code platform for creating mock API endpoints, inspecting HTTP traffic, and simplifying API testing. It enables rule-based mocking, seamless debugging of webhooks, and load testing with mock services, ensuring real APIs remain unaffected.

Read more about Beeceptor

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KeyRunner

(0)

Platform to build, test and secure APIs

Keyrunner API Client is a zero-trust, security-focused platform for developers and DevOps teams that facilitates API design, testing, and management. It features mock servers, encrypted environment variables, and sensitive data redaction.

Read more about KeyRunner

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Zunoy MockAPI

(0)

Create and host mock APIs for faster development and testing

Zunoy MockAPI helps developers create and host mock REST APIs for development and testing. Configure routes, requests, responses, authentication, and scenarios, generate Swagger documentation, and share mock endpoints without setting up a backend.

Read more about Zunoy MockAPI

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SocialAPI

(0)

Social media API platform for businesses

Cloud-based social media API platform providing businesses with unified access to social network data, publishing, and analytics.

Read more about SocialAPI

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KrakenD AI & API Gateway

(0)

Self-hosted API gateway for microservices teams

Self-hosted, stateless API gateway for microservices teams, supporting aggregation, transformation, rate limiting, and security.

Read more about KrakenD AI & API Gateway

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